What's Tempered Glass&quest;Toughened or tempered glass is a type of safety glass processed by controlled thermal or chemical treatments to increase its strength compared with normal glass&period; Tempering puts the outer surfaces into compression and the inner surfaces into tension&period; Such stresses cause the glass&comma; when broken&comma; to crumble into small granular chunks instead of splintering into jagged shards as plate glass &lpar;aka&colon; annealed glass&rpar; creates&period;Tempered Glass Characteristics&colon;1&period; Safety&colon; If breakage occurs the glass breaks up into small&comma; cubical fragements&comma; which are not threatening to human&period;2&period; Stronger resistance to thermal breakage than annealed or heat strengthened glass3&period;4-5 times stronger than annealed glass of the same thickness&period;4&period; It withstands abrupt temperature change of 220° C&period;5&period; Sizes are produced per customer request&comma; once tempered&comma; cannot be cut down